From 2a028d08370a86aeca124efc9a7b3e52ac32c367 Mon Sep 17 00:00:00 2001
From: Ariver <ar@MacBook-Air.local>
Date: Wed, 13 May 2026 23:53:08 +0800
Subject: [PATCH] Release TagLauncher 5.7.0

---
 Apptag/ContentView.swift |  768 +++++++++++++++++++++++++++++++++++++++++++++++-----------
 1 files changed, 621 insertions(+), 147 deletions(-)

diff --git a/Apptag/ContentView.swift b/Apptag/ContentView.swift
index 14a9452..3430c2e 100644
--- a/Apptag/ContentView.swift
+++ b/Apptag/ContentView.swift
@@ -1,10 +1,11 @@
 import SwiftUI
 import AppKit
+import UniformTypeIdentifiers
 
 // MARK: - Notification for manual re-index
 
 extension Notification.Name {
-    static let apptagEditModeChanged = Notification.Name("ApptagEditModeChanged")
+    static let tagLauncherEditModeChanged = Notification.Name("TagLauncherEditModeChanged")
 }
 
 // MARK: - Edit Phase
@@ -109,7 +110,10 @@
 struct TagPill: View {
     let name: String
     let colorIndex: Int
+    var dragModeActive: Bool = false
+    var isDragging: Bool = false
     let action: () -> Void
+    @State private var wiggle = false
 
     private var bgColor: Color {
         Color(nsColor: TagColor.nsColor(for: colorIndex))
@@ -123,16 +127,28 @@
     }
 
     var body: some View {
-        Button(action: action) {
-            Text(name)
-                .font(.system(size: 13, weight: .medium))
-                .foregroundStyle(textColor)
-                .padding(.horizontal, 12)
-                .padding(.vertical, 6)
-                .background(RoundedRectangle(cornerRadius: 7).fill(bgColor))
-                .shadow(color: .black.opacity(0.2), radius: 3, y: 1)
+        Text(name)
+            .font(.system(size: 13, weight: .medium))
+            .foregroundStyle(textColor)
+            .padding(.horizontal, 12)
+            .padding(.vertical, 6)
+            .background(RoundedRectangle(cornerRadius: 7).fill(bgColor))
+            .shadow(color: .black.opacity(isDragging ? 0.34 : 0.2), radius: isDragging ? 8 : 3, y: isDragging ? 4 : 1)
+            .scaleEffect(isDragging ? 1.05 : 1.0)
+            .rotationEffect(.degrees(dragModeActive ? (wiggle ? 1.8 : -1.8) : 0))
+            .animation(
+                dragModeActive
+                    ? .easeInOut(duration: 0.12).repeatForever(autoreverses: true)
+                    : .default,
+                value: wiggle
+            )
+            .onChange(of: dragModeActive) { _, active in
+                wiggle = active
+            }
+            .contentShape(RoundedRectangle(cornerRadius: 7))
+            .onTapGesture {
+                if !dragModeActive { action() }
         }
-        .buttonStyle(.plain)
     }
 }
 
@@ -141,7 +157,10 @@
 struct SideTagPill: View {
     let name: String
     let colorIndex: Int
+    var dragModeActive: Bool = false
+    var isDragging: Bool = false
     let action: () -> Void
+    @State private var wiggle = false
 
     private var bgColor: Color {
         Color(nsColor: TagColor.nsColor(for: colorIndex))
@@ -151,16 +170,28 @@
     }
 
     var body: some View {
-        Button(action: action) {
-            Text(name)
-                .font(.system(size: 13, weight: .medium))
-                .foregroundStyle(textColor)
-                .padding(.horizontal, 10).padding(.vertical, 5)
-                .frame(maxWidth: .infinity, alignment: .leading)
-                .background(RoundedRectangle(cornerRadius: 6).fill(bgColor))
-                .shadow(color: .black.opacity(0.2), radius: 3, y: 1)
+        Text(name)
+            .font(.system(size: 13, weight: .medium))
+            .foregroundStyle(textColor)
+            .padding(.horizontal, 10).padding(.vertical, 5)
+            .frame(maxWidth: .infinity, alignment: .leading)
+            .background(RoundedRectangle(cornerRadius: 6).fill(bgColor))
+            .shadow(color: .black.opacity(isDragging ? 0.34 : 0.2), radius: isDragging ? 8 : 3, y: isDragging ? 4 : 1)
+            .scaleEffect(isDragging ? 1.03 : 1.0)
+            .rotationEffect(.degrees(dragModeActive ? (wiggle ? 1.6 : -1.6) : 0))
+            .animation(
+                dragModeActive
+                    ? .easeInOut(duration: 0.12).repeatForever(autoreverses: true)
+                    : .default,
+                value: wiggle
+            )
+            .onChange(of: dragModeActive) { _, active in
+                wiggle = active
+            }
+            .contentShape(RoundedRectangle(cornerRadius: 6))
+            .onTapGesture {
+                if !dragModeActive { action() }
         }
-        .buttonStyle(.plain)
     }
 }
 
@@ -203,9 +234,18 @@
     @State private var successToast: String? = nil
     @State private var draggedTagNames: [String] = []  // live drag order
     @State private var dragItem: String? = nil          // currently dragged tag
+    @State private var tagReorderFrames: [String: CGRect] = [:]
+    @State private var tagNavDragModeActive = false
+    @State private var tagNavDragItem: String? = nil
+    @State private var tagNavReorderFrames: [String: CGRect] = [:]
     @State private var hoveredContainer: String? = nil  // colored container lift
     // Fixed interaction for "Colorless Container": hover fills persistently; click clears.
     @State private var filledColorlessContainer: String? = nil
+    @State private var appDragModeActive = false
+    @State private var dropWarningToast: String? = nil
+    @State private var dropRefreshVisible = false
+    @State private var dropRefreshStartedAt: Date? = nil
+    @State private var layoutRefreshID = UUID()
 
     // Configurable defaults
     @AppStorage("defaultGroupName") private var defaultGroupName = "Other"
@@ -252,6 +292,41 @@
             case .editingApps:
                 editAppsView
             }
+
+            if let message = dropWarningToast {
+                Text(message)
+                    .font(.system(size: 16, weight: .semibold))
+                    .foregroundStyle(.primary)
+                    .padding(.horizontal, 22)
+                    .padding(.vertical, 12)
+                    .background(
+                        RoundedRectangle(cornerRadius: 10)
+                            .fill(.ultraThickMaterial)
+                            .shadow(color: .black.opacity(0.22), radius: 18, y: 10)
+                    )
+                    .transition(.scale(scale: 0.96).combined(with: .opacity))
+                    .allowsHitTesting(false)
+            }
+
+            if dropRefreshVisible {
+                Color.black.opacity(0.08)
+                    .ignoresSafeArea()
+                    .transition(.opacity)
+                    .allowsHitTesting(false)
+
+                ProgressView()
+                    .progressViewStyle(.circular)
+                    .controlSize(.large)
+                    .scaleEffect(1.15)
+                    .padding(24)
+                    .background(
+                        RoundedRectangle(cornerRadius: 12)
+                            .fill(.ultraThickMaterial)
+                            .shadow(color: .black.opacity(0.26), radius: 24, y: 12)
+                    )
+                    .transition(.scale(scale: 0.92).combined(with: .opacity))
+                    .allowsHitTesting(false)
+            }
         }
         .onAppear {
             let mousePoint = NSEvent.mouseLocation
@@ -267,7 +342,7 @@
         .onChange(of: editPhase) { _, newPhase in
             let active = newPhase != .none
             NotificationCenter.default.post(
-                name: .apptagEditModeChanged,
+                name: .tagLauncherEditModeChanged,
                 object: nil,
                 userInfo: ["active": active]
             )
@@ -277,7 +352,7 @@
     /// Set edit phase with synchronous notification BEFORE state change.
     func setEditPhase(_ phase: EditPhase) {
         if phase != .none {
-            NotificationCenter.default.post(name: .apptagEditModeChanged, object: nil, userInfo: ["active": true])
+            NotificationCenter.default.post(name: .tagLauncherEditModeChanged, object: nil, userInfo: ["active": true])
             NSApp.activate(ignoringOtherApps: true)
             // Always sync tag list from database when entering edit mode
             let store = TagDatabase.load()
@@ -287,7 +362,7 @@
         editPhase = phase
         if phase == .none {
             DispatchQueue.main.async {
-                NotificationCenter.default.post(name: .apptagEditModeChanged, object: nil, userInfo: ["active": false])
+                NotificationCenter.default.post(name: .tagLauncherEditModeChanged, object: nil, userInfo: ["active": false])
             }
         }
     }
@@ -346,12 +421,17 @@
             HStack(spacing: 8) {
                 ForEach(tagLabels) { tag in
                     TagPill(name: tag.name, colorIndex: tag.colorIndex,
+                            dragModeActive: tagNavDragModeActive && canReorderTag(tag.name),
+                            isDragging: tagNavDragItem == tag.name,
                             action: {
                         if isColorlessContainerMode {
                             toggleColorlessFill(tag.id)
                         }
                         scrollTo(tag.id)
                     })
+                    .background(tagNavFrameReader(for: tag.name))
+                    .zIndex(tagNavDragItem == tag.name ? 1 : 0)
+                    .highPriorityGesture(tagNavReorderGesture(for: tag.name))
                     .onHover { hovering in
                         if hovering {
                             fillColorlessContainer(tag.id)
@@ -359,7 +439,12 @@
                         }
                     }
                 }
-            }.padding(.horizontal, 24)
+            }
+            .padding(.horizontal, 24)
+            .coordinateSpace(name: "tagNavReorder")
+            .onPreferenceChange(TagNavReorderFramePreferenceKey.self) { frames in
+                tagNavReorderFrames = frames
+            }
         }
     }
 
@@ -368,12 +453,17 @@
             VStack(spacing: 6) {
                 ForEach(tagLabels) { tag in
                     SideTagPill(name: tag.name, colorIndex: tag.colorIndex,
+                                dragModeActive: tagNavDragModeActive && canReorderTag(tag.name),
+                                isDragging: tagNavDragItem == tag.name,
                                 action: {
                         if isColorlessContainerMode {
                             toggleColorlessFill(tag.id)
                         }
                         scrollTo(tag.id)
                     })
+                    .background(tagNavFrameReader(for: tag.name))
+                    .zIndex(tagNavDragItem == tag.name ? 1 : 0)
+                    .highPriorityGesture(tagNavReorderGesture(for: tag.name))
                     .onHover { hovering in
                         if hovering {
                             fillColorlessContainer(tag.id)
@@ -381,7 +471,12 @@
                         }
                     }
                 }
-            }.padding(12)
+            }
+            .padding(12)
+            .coordinateSpace(name: "tagNavReorder")
+            .onPreferenceChange(TagNavReorderFramePreferenceKey.self) { frames in
+                tagNavReorderFrames = frames
+            }
         }.frame(width: 135)
     }
 
@@ -403,6 +498,7 @@
                 flatGrid
             }
         }
+        .id(layoutRefreshID)
     }
 
     private var flatGrid: some View {
@@ -415,7 +511,12 @@
                             onSelectApp: { app in openApp(app) },
                             tagFontSize: tagFontSize,
                             iconSize: iconSize,
-                            showNames: !hideAppNames
+                            showNames: !hideAppNames,
+                            dragModeActive: appDragModeActive,
+                            onDragModeChange: { setAppDragMode($0) },
+                            onDropApp: { path, source, copy in
+                                dropApp(path: path, sourceTag: source, targetTag: group.name, copy: copy)
+                            }
                         ).id(group.id)
                     }
                 }.padding(20)
@@ -471,10 +572,12 @@
 
     private func estimatedCardHeight(_ group: TagGroup, width: CGFloat) -> CGFloat {
         let inner = width - 32
-        let itemW = iconSize + 28 + 6
+        let itemW = AppGridItem.stableWidth(iconSize: iconSize) + 6
         let perRow = max(1, Int(inner / itemW))
         let rows = (group.apps.count + perRow - 1) / perRow
-        return 32 + CGFloat(rows) * (iconSize + 30)
+        return 32
+            + CGFloat(rows) * AppGridItem.stableHeight(iconSize: iconSize)
+            + CGFloat(max(0, rows - 1)) * 2
     }
 
     private func masonryCard(_ group: TagGroup, width: CGFloat) -> some View {
@@ -482,6 +585,7 @@
         let isColorless = isColorlessContainerMode
         let isColorlessFilled = isColorless && filledColorlessContainer == group.name
         let isHovered = hoveredContainer == group.name
+        let isColorlessActive = isColorless && (isColorlessFilled || isHovered)
         let tagColor = Color(nsColor: TagColor.nsColor(for: tagColors[group.name] ?? 0))
         return VStack(alignment: .leading, spacing: 6) {
             HStack(spacing: 0) {
@@ -497,13 +601,21 @@
                 Rectangle().fill(.secondary.opacity(0.25)).frame(height: 1)
                     .layoutPriority(0)
             }
-            let itemSize = iconSize + 28
+            let itemSize = AppGridItem.stableWidth(iconSize: iconSize)
             LazyVGrid(
                 columns: [GridItem(.adaptive(minimum: itemSize, maximum: itemSize + 36), spacing: 6)],
                 spacing: 2
             ) {
                 ForEach(group.apps) { app in
-                    AppGridItem(app: app, iconSize: iconSize, showName: !hideAppNames, onSelect: { openApp(app) })
+                    AppGridItem(
+                        app: app,
+                        iconSize: iconSize,
+                        showName: !hideAppNames,
+                        sourceTag: group.name,
+                        dragModeActive: appDragModeActive,
+                        onDragModeChange: { setAppDragMode($0) },
+                        onSelect: { openApp(app) }
+                    )
                 }
             }
         }
@@ -511,7 +623,7 @@
         .padding(16)
         .background(
             RoundedRectangle(cornerRadius: 14)
-                .fill((isColored || isColorlessFilled) ? tagColor.opacity(0.30) : Color.clear)
+                .fill((isColored || isColorlessActive) ? tagColor.opacity(0.30) : Color.clear)
                 .background(
                     RoundedRectangle(cornerRadius: 14)
                         .fill(.ultraThinMaterial)
@@ -521,23 +633,31 @@
             RoundedRectangle(cornerRadius: 14)
                 .stroke(Color.primary.opacity(0.08), lineWidth: 1)
         )
-        .shadow(color: .black.opacity(isColored && isHovered ? 0.22 : 0),
-                radius: isColored && isHovered ? 18 : 0,
-                y: isColored && isHovered ? 10 : 0)
+        .overlay {
+            AppDropTargetView(targetTag: group.name) { path, source, copy in
+                dropApp(path: path, sourceTag: source, targetTag: group.name, copy: copy)
+            }
+            .allowsHitTesting(false)
+        }
+        .shadow(color: .black.opacity((isColored && isHovered) || isColorlessActive ? 0.22 : 0),
+                radius: (isColored && isHovered) || isColorlessActive ? 18 : 0,
+                y: (isColored && isHovered) || isColorlessActive ? 10 : 0)
         .scaleEffect(isColored && isHovered ? 1.015 : 1.0)
         .animation(.spring(response: 0.25, dampingFraction: 0.82), value: isHovered)
+        .animation(.spring(response: 0.25, dampingFraction: 0.82), value: isColorlessFilled)
         .onHover { hovering in
-            if isColored {
+            if isColored || isColorless {
                 hoveredContainer = hovering ? group.name : nil
-            } else if hovering {
-                fillColorlessContainer(group.name)
             }
         }
         .contentShape(RoundedRectangle(cornerRadius: 14))
         .onTapGesture {
-            if isColorlessFilled {
-                filledColorlessContainer = nil
+            if isColorless {
+                toggleColorlessFill(group.name)
             }
+        }
+        .onDrop(of: [UTType.plainText], isTargeted: nil) { providers in
+            handleAppDrop(providers, targetTag: group.name)
         }
     }
 
@@ -547,23 +667,19 @@
             let gap: CGFloat = 16
             let available = geo.size.width - outerPad * 2
             let preferredCount = preferredGridContainersPerRow(availableWidth: available)
-            let rows = gridContainerRows(groups: groups, preferredCount: preferredCount)
+            let rows = gridContainerRows(groups: groups, trackCount: preferredCount, availableWidth: available, gap: gap)
 
             ScrollViewReader { proxy in
                 ScrollView {
-                    LazyVStack(alignment: .leading, spacing: gap) {
-                        ForEach(rows.indices, id: \.self) { rowIndex in
+                    VStack(alignment: .leading, spacing: gap) {
+                        ForEach(Array(rows.indices), id: \.self) { rowIndex in
                             let row = rows[rowIndex]
-                            let rowCount = max(1, row.count)
-                            let cardWidth = (available - gap * CGFloat(rowCount - 1)) / CGFloat(rowCount)
-                            let fixedRows = row.map {
-                                iconRows(appCount: $0.apps.count, width: cardWidth)
-                            }.max() ?? 1
 
                             HStack(alignment: .top, spacing: gap) {
-                                ForEach(row) { group in
-                                    gridContainerCard(group, width: cardWidth, fixedRows: fixedRows)
-                                        .id(group.id)
+                                ForEach(Array(row.items.indices), id: \.self) { itemIndex in
+                                    let item = row.items[itemIndex]
+                                    gridContainerCard(item.group, width: item.width, fixedRows: row.fixedRows)
+                                        .id(item.group.id)
                                 }
                             }
                         }
@@ -578,27 +694,111 @@
     }
 
     private func preferredGridContainersPerRow(availableWidth: CGFloat) -> Int {
-        let minCardWidth = max(260, iconSize * 3 + 88)
+        let minCardWidth = max(260, AppGridItem.stableWidth(iconSize: iconSize) * 3 + 64)
         if availableWidth >= minCardWidth * 3 + 32 { return 3 }
         if availableWidth >= minCardWidth * 2 + 16 { return 2 }
         return 1
     }
 
-    private func gridContainerRows(groups: [TagGroup], preferredCount: Int) -> [[TagGroup]] {
-        var rows: [[TagGroup]] = []
+    private struct GridContainerLayoutItem {
+        let group: TagGroup
+        let width: CGFloat
+    }
+
+    private struct GridContainerLayoutRow {
+        let items: [GridContainerLayoutItem]
+        let fixedRows: Int
+    }
+
+    private struct GridContainerCandidate {
+        let spans: [Int]
+        let rows: Int
+        let cost: CGFloat
+    }
+
+    private func gridContainerRows(groups: [TagGroup], trackCount: Int, availableWidth: CGFloat, gap: CGFloat) -> [GridContainerLayoutRow] {
+        let trackCount = max(1, trackCount)
+        let trackWidth = (availableWidth - gap * CGFloat(trackCount - 1)) / CGFloat(trackCount)
+        let patterns = gridContainerSpanPatterns(trackCount: trackCount)
+        let n = groups.count
+        guard n > 0 else { return [] }
+
+        var bestCost = Array(repeating: CGFloat.greatestFiniteMagnitude, count: n + 1)
+        var bestPattern = Array(repeating: [Int](), count: n)
+        bestCost[n] = 0
+
+        for index in stride(from: n - 1, through: 0, by: -1) {
+            for pattern in patterns where index + pattern.count <= n {
+                let candidate = gridContainerCandidate(
+                    groups: groups,
+                    startIndex: index,
+                    spans: pattern,
+                    trackWidth: trackWidth,
+                    availableWidth: availableWidth,
+                    gap: gap
+                )
+                let totalCost = candidate.cost + bestCost[index + pattern.count]
+                if totalCost < bestCost[index] {
+                    bestCost[index] = totalCost
+                    bestPattern[index] = candidate.spans
+                }
+            }
+        }
+
+        var rows: [GridContainerLayoutRow] = []
         var index = 0
-        while index < groups.count {
-            let remaining = groups.count - index
-            let count = min(max(1, preferredCount), remaining)
-            rows.append(Array(groups[index..<index + count]))
-            index += count
+        while index < n {
+            let spans = bestPattern[index].isEmpty ? [trackCount] : bestPattern[index]
+            let widths = spans.map { gridContainerWidth(trackWidth: trackWidth, span: $0, gap: gap) }
+            let fixedRows = widths.indices.map {
+                iconRows(appCount: groups[index + $0].apps.count, width: widths[$0])
+            }.max() ?? 1
+            let items = widths.indices.map {
+                GridContainerLayoutItem(group: groups[index + $0], width: widths[$0])
+            }
+            rows.append(GridContainerLayoutRow(items: items, fixedRows: fixedRows))
+            index += spans.count
         }
         return rows
     }
 
+    private func gridContainerSpanPatterns(trackCount: Int) -> [[Int]] {
+        switch trackCount {
+        case 3:
+            return [[1, 1, 1], [1, 2], [2, 1], [3]]
+        case 2:
+            return [[1, 1], [2]]
+        default:
+            return [[1]]
+        }
+    }
+
+    private func gridContainerCandidate(
+        groups: [TagGroup],
+        startIndex: Int,
+        spans: [Int],
+        trackWidth: CGFloat,
+        availableWidth: CGFloat,
+        gap: CGFloat
+    ) -> GridContainerCandidate {
+        let widths = spans.map { gridContainerWidth(trackWidth: trackWidth, span: $0, gap: gap) }
+        let rowCounts = widths.indices.map {
+            iconRows(appCount: groups[startIndex + $0].apps.count, width: widths[$0])
+        }
+        let fixedRows = rowCounts.max() ?? 1
+        let rowArea = CGFloat(fixedRows) * iconCellHeight() * availableWidth
+        let paddingCost = CGFloat(spans.count) * 0.001
+        return GridContainerCandidate(spans: spans, rows: fixedRows, cost: rowArea + paddingCost)
+    }
+
+    private func gridContainerWidth(trackWidth: CGFloat, span: Int, gap: CGFloat) -> CGFloat {
+        let span = max(1, span)
+        return trackWidth * CGFloat(span) + gap * CGFloat(span - 1)
+    }
+
     private func iconColumns(width: CGFloat) -> Int {
         let inner = width - 32
-        let itemW = iconSize + 34
+        let itemW = AppGridItem.stableWidth(iconSize: iconSize) + 6
         return max(1, Int((inner + 6) / itemW))
     }
 
@@ -609,12 +809,17 @@
 
     private func gridContainerCard(_ group: TagGroup, width: CGFloat, fixedRows: Int) -> some View {
         let isColored = displayMode == "coloredGridContainer"
+        let isColorlessGrid = displayMode == "gridContainer"
         let isColorless = isColorlessContainerMode
         let isColorlessFilled = isColorless && filledColorlessContainer == group.name
         let isHovered = hoveredContainer == group.name
+        let isColorlessGridActive = isColorlessGrid && (isColorlessFilled || isHovered)
         let cols = iconColumns(width: width)
-        let maxCells = max(cols, fixedRows * cols)
-        let emptyCells = max(0, maxCells - group.apps.count)
+        let contentWidth = max(1, width - 32)
+        let cellWidth = max(1, (contentWidth - 6 * CGFloat(cols - 1)) / CGFloat(cols))
+        let cellHeight = iconCellHeight()
+        let gridHeight = CGFloat(fixedRows) * cellHeight + CGFloat(max(0, fixedRows - 1)) * 2
+        let rows = appRows(group.apps, columns: cols, fixedRows: fixedRows)
         let tagColor = Color(nsColor: TagColor.nsColor(for: tagColors[group.name] ?? 0))
 
         return VStack(alignment: .leading, spacing: 6) {
@@ -632,24 +837,39 @@
                     .layoutPriority(0)
             }
 
-            LazyVGrid(
-                columns: Array(repeating: GridItem(.flexible(), spacing: 6), count: cols),
-                spacing: 2
-            ) {
-                ForEach(group.apps) { app in
-                    AppGridItem(app: app, iconSize: iconSize, showName: !hideAppNames, onSelect: { openApp(app) })
-                }
-                ForEach(0..<emptyCells, id: \.self) { _ in
-                    Color.clear
-                        .frame(width: iconSize + 20, height: iconSize + (hideAppNames ? 16 : 42))
+            VStack(alignment: .leading, spacing: 2) {
+                ForEach(rows.indices, id: \.self) { rowIndex in
+                    HStack(alignment: .top, spacing: 6) {
+                        ForEach(rows[rowIndex]) { app in
+                            AppGridItem(
+                                app: app,
+                                iconSize: iconSize,
+                                showName: !hideAppNames,
+                                sourceTag: group.name,
+                                dragModeActive: appDragModeActive,
+                                onDragModeChange: { setAppDragMode($0) },
+                                onSelect: { openApp(app) }
+                            )
+                                .frame(width: cellWidth)
+                                .frame(height: cellHeight)
+                        }
+
+                        let emptyCells = max(0, cols - rows[rowIndex].count)
+                        ForEach(0..<emptyCells, id: \.self) { _ in
+                            Color.clear
+                                .frame(width: cellWidth, height: cellHeight)
+                        }
+                    }
+                    .frame(height: cellHeight)
                 }
             }
+            .frame(height: gridHeight, alignment: .topLeading)
         }
-        .frame(width: width)
+        .frame(width: contentWidth)
         .padding(16)
         .background(
             RoundedRectangle(cornerRadius: 14)
-                .fill((isColored || isColorlessFilled) ? tagColor.opacity(0.30) : Color.clear)
+                .fill((isColored || isColorlessGridActive) ? tagColor.opacity(0.30) : Color.clear)
                 .background(
                     RoundedRectangle(cornerRadius: 14)
                         .fill(.ultraThinMaterial)
@@ -659,13 +879,20 @@
             RoundedRectangle(cornerRadius: 14)
                 .stroke(Color.primary.opacity(0.08), lineWidth: 1)
         )
-        .shadow(color: .black.opacity(isColored && isHovered ? 0.22 : 0),
-                radius: isColored && isHovered ? 18 : 0,
-                y: isColored && isHovered ? 10 : 0)
+        .overlay {
+            AppDropTargetView(targetTag: group.name) { path, source, copy in
+                dropApp(path: path, sourceTag: source, targetTag: group.name, copy: copy)
+            }
+            .allowsHitTesting(false)
+        }
+        .shadow(color: .black.opacity((isColored && isHovered) || isColorlessGridActive ? 0.22 : 0),
+                radius: (isColored && isHovered) || isColorlessGridActive ? 18 : 0,
+                y: (isColored && isHovered) || isColorlessGridActive ? 10 : 0)
         .scaleEffect(isColored && isHovered ? 1.015 : 1.0)
         .animation(.spring(response: 0.25, dampingFraction: 0.82), value: isHovered)
+        .animation(.spring(response: 0.25, dampingFraction: 0.82), value: isColorlessFilled)
         .onHover { hovering in
-            if isColored {
+            if isColored || isColorlessGrid {
                 hoveredContainer = hovering ? group.name : nil
             } else if hovering {
                 fillColorlessContainer(group.name)
@@ -673,9 +900,27 @@
         }
         .contentShape(RoundedRectangle(cornerRadius: 14))
         .onTapGesture {
-            if isColorlessFilled {
-                filledColorlessContainer = nil
+            if isColorlessGrid {
+                toggleColorlessFill(group.name)
             }
+        }
+        .onDrop(of: [UTType.plainText], isTargeted: nil) { providers in
+            handleAppDrop(providers, targetTag: group.name)
+        }
+    }
+
+    private func iconCellHeight() -> CGFloat {
+        AppGridItem.stableHeight(iconSize: iconSize)
+    }
+
+    private func appRows(_ apps: [AppInfo], columns: Int, fixedRows: Int) -> [[AppInfo]] {
+        let columns = max(1, columns)
+        let rowCount = max(1, fixedRows)
+        return (0..<rowCount).map { rowIndex in
+            let start = rowIndex * columns
+            guard start < apps.count else { return [] }
+            let end = min(start + columns, apps.count)
+            return Array(apps[start..<end])
         }
     }
 
@@ -724,7 +969,7 @@
                 Spacer()
                 Button(tr("edit.confirm")) { confirmAssign() }
                     .buttonStyle(.borderedProminent)
-                    .disabled(selectedAppPaths.isEmpty || selectedTagNames.isEmpty)
+                    .disabled(selectedAppPaths.isEmpty)
             }
             .padding(.horizontal, 24)
             .padding(.top, notchHeight > 0 ? notchHeight + 10 : 20)
@@ -740,27 +985,27 @@
                         VStack(spacing: 4) {
                             ForEach(sortedTagNames, id: \.self) { tagName in
                                 selectableTagItem(tagName)
-                                    .onDrag {
-                                        dragItem = tagName
-                                        return NSItemProvider(object: tagName as NSString)
-                                    }
-                                    .onDrop(of: [.text], isTargeted: nil) { providers, _ in
-                                        guard let fromName = dragItem,
-                                              var names = draggedTagNames as [String]?,
-                                              let fromIdx = names.firstIndex(of: fromName),
-                                              let toIdx = names.firstIndex(of: tagName),
-                                              fromIdx != toIdx
-                                        else { return false }
-                                        let toOffset = toIdx > fromIdx ? toIdx + 1 : toIdx
-                                        names.move(fromOffsets: [fromIdx], toOffset: toOffset)
-                                        draggedTagNames = names
-                                        TagEditor.reorderTags(names)
-                                        dragItem = nil
-                                        return true
-                                    }
+                                    .opacity(dragItem == tagName ? 0.72 : 1.0)
+                                    .scaleEffect(dragItem == tagName ? 1.03 : 1.0)
+                                    .background(
+                                        GeometryReader { proxy in
+                                            Color.clear.preference(
+                                                key: TagReorderFramePreferenceKey.self,
+                                                value: [tagName: proxy.frame(in: .named("tagReorderList"))]
+                                            )
+                                        }
+                                    )
+                                    .zIndex(dragItem == tagName ? 1 : 0)
+                                    .highPriorityGesture(tagReorderGesture(for: tagName))
                             }
-                        }.padding(12)
-                    }.frame(width: 155)
+                        }
+                        .padding(12)
+                        .coordinateSpace(name: "tagReorderList")
+                        .onPreferenceChange(TagReorderFramePreferenceKey.self) { frames in
+                            tagReorderFrames = frames
+                        }
+                    }
+                    .frame(width: 155)
                 }
                 Rectangle().fill(.secondary.opacity(0.12)).frame(width: 1)
 
@@ -786,63 +1031,43 @@
     }
 
     private var editAppsGrid: some View {
-        GeometryReader { geo in
-            let outerPad: CGFloat = 20
-            let gap: CGFloat = 16
-            let available = geo.size.width - outerPad * 2
-            let colW: CGFloat = 300
-            let colCount = max(1, Int((available + gap) / (colW + gap)))
-            let actualColW = (available - gap * CGFloat(colCount - 1)) / CGFloat(colCount)
-            let columns = distributeToColumns(groups: groups, colCount: colCount, colWidth: actualColW)
-
-            ScrollView {
-                HStack(alignment: .top, spacing: gap) {
-                    ForEach(0..<colCount, id: \.self) { ci in
-                        LazyVStack(spacing: gap) {
-                            ForEach(columns[ci]) { group in
-                                editGroupCard(group, width: actualColW)
-                            }
-                        }
-                    }
+        ScrollView {
+            LazyVStack(alignment: .leading, spacing: 24) {
+                ForEach(groups) { group in
+                    editFlatGroup(group)
                 }
-                .padding(outerPad)
-                .frame(maxWidth: .infinity, alignment: .topLeading)
             }
+            .padding(20)
         }
     }
 
-    private func editGroupCard(_ group: TagGroup, width: CGFloat) -> some View {
-        VStack(alignment: .leading, spacing: 6) {
+    private func editFlatGroup(_ group: TagGroup) -> some View {
+        VStack(alignment: .leading, spacing: 0) {
             HStack(spacing: 0) {
                 Rectangle().fill(.secondary.opacity(0.25)).frame(height: 1)
-                    .layoutPriority(0)
                 Text(group.name)
                     .font(.system(size: tagFontSize, weight: .semibold))
                     .foregroundStyle(.secondary)
-                    .lineLimit(1)
-                    .truncationMode(.middle)
                     .padding(.horizontal, 10)
-                    .layoutPriority(1)
                 Rectangle().fill(.secondary.opacity(0.25)).frame(height: 1)
-                    .layoutPriority(0)
             }
+            .padding(.bottom, 6)
+
             LazyVGrid(
-                columns: [GridItem(.adaptive(minimum: iconSize + 28, maximum: iconSize + 64), spacing: 6)],
+                columns: [
+                    GridItem(
+                        .adaptive(
+                            minimum: AppGridItem.stableWidth(iconSize: iconSize),
+                            maximum: AppGridItem.stableWidth(iconSize: iconSize) + 36
+                        ),
+                        spacing: 6
+                    )
+                ],
                 spacing: 2
             ) {
                 ForEach(group.apps) { app in editableAppItem(app) }
             }
         }
-        .frame(maxWidth: width)
-        .padding(16)
-        .background(
-            RoundedRectangle(cornerRadius: 14)
-                .fill(.ultraThinMaterial)
-        )
-        .overlay(
-            RoundedRectangle(cornerRadius: 14)
-                .stroke(Color.primary.opacity(0.08), lineWidth: 1)
-        )
     }
 
     private func selectableTagItem(_ tagName: String) -> some View {
@@ -864,12 +1089,41 @@
         }
     }
 
-    private func confirmAssign() {
-        guard !selectedAppPaths.isEmpty, !selectedTagNames.isEmpty else { return }
-        let paths = selectedAppPaths.map { $0.path }
-        for tagName in selectedTagNames {
-            TagEditor.assignTag(tagName, color: tagColors[tagName] ?? 0, to: paths)
+    private func tagReorderGesture(for tagName: String) -> some Gesture {
+        DragGesture(minimumDistance: 4, coordinateSpace: .named("tagReorderList"))
+            .onChanged { value in
+                if dragItem == nil {
+                    dragItem = tagName
+                }
+                guard dragItem == tagName else { return }
+                reorderDraggedTag(at: value.location)
+            }
+            .onEnded { _ in
+                dragItem = nil
+                TagEditor.reorderTags(draggedTagNames)
+            }
+    }
+
+    private func reorderDraggedTag(at location: CGPoint) {
+        guard let fromName = dragItem,
+              let targetName = tagReorderFrames.first(where: { $0.value.contains(location) })?.key,
+              fromName != targetName,
+              let fromIndex = draggedTagNames.firstIndex(of: fromName),
+              let toIndex = draggedTagNames.firstIndex(of: targetName)
+        else { return }
+
+        withAnimation(.easeInOut(duration: 0.14)) {
+            let destination = toIndex > fromIndex ? toIndex + 1 : toIndex
+            draggedTagNames.move(fromOffsets: IndexSet(integer: fromIndex), toOffset: destination)
         }
+        TagEditor.reorderTags(draggedTagNames)
+    }
+
+    private func confirmAssign() {
+        guard !selectedAppPaths.isEmpty else { return }
+        let paths = selectedAppPaths.map { $0.path }
+        let tags = sortedTagNames.filter { selectedTagNames.contains($0) }
+        TagEditor.setTags(tags, to: paths)
         selectedAppPaths = []; selectedTagNames = []
         refreshApps()
         withAnimation { successToast = tr("edit.success") }
@@ -882,7 +1136,7 @@
     private func editableAppItem(_ app: AppInfo) -> some View {
         let isSelected = selectedAppPaths.contains(app.path)
         return Button {
-            if isSelected { selectedAppPaths.remove(app.path) } else { selectedAppPaths.insert(app.path) }
+            toggleEditableAppSelection(app)
         } label: {
             VStack(spacing: 4) {
                 ZStack(alignment: .topTrailing) {
@@ -902,6 +1156,33 @@
             .opacity(isSelected ? 1.0 : 0.65)
         }
         .buttonStyle(.plain)
+    }
+
+    private func toggleEditableAppSelection(_ app: AppInfo) {
+        if selectedAppPaths.contains(app.path) {
+            selectedAppPaths.remove(app.path)
+        } else {
+            selectedAppPaths.insert(app.path)
+        }
+        syncSelectedTagsFromSelectedApps()
+    }
+
+    private func syncSelectedTagsFromSelectedApps() {
+        let selectedApps = allApps.filter { selectedAppPaths.contains($0.path) }
+        guard !selectedApps.isEmpty else {
+            selectedTagNames = []
+            return
+        }
+
+        let editableTags = Set(sortedTagNames)
+        if selectedApps.count == 1 {
+            selectedTagNames = Set(selectedApps[0].tags.filter { editableTags.contains($0) })
+            return
+        }
+
+        selectedTagNames = selectedApps.reduce(into: Set<String>()) { result, app in
+            result.formUnion(app.tags.filter { editableTags.contains($0) })
+        }
     }
 
     // MARK: - Computed
@@ -942,16 +1223,185 @@
     }
 
     private func fillColorlessContainer(_ id: String) {
-        guard displayMode == "container" else { return }
+        guard isColorlessContainerMode else { return }
         filledColorlessContainer = id
     }
 
     private func toggleColorlessFill(_ id: String) {
-        guard displayMode == "container" else { return }
+        guard isColorlessContainerMode else { return }
         filledColorlessContainer = (filledColorlessContainer == id) ? nil : id
     }
 
-    func refreshApps() {
+    private func canReorderTag(_ name: String) -> Bool {
+        tagColors[name] != nil && name != "Mac自带" && name != defaultGroupName
+    }
+
+    private func tagNavFrameReader(for tagName: String) -> some View {
+        GeometryReader { proxy in
+            Color.clear.preference(
+                key: TagNavReorderFramePreferenceKey.self,
+                value: canReorderTag(tagName)
+                    ? [tagName: proxy.frame(in: .named("tagNavReorder"))]
+                    : [:]
+            )
+        }
+    }
+
+    private func tagNavReorderGesture(for tagName: String) -> some Gesture {
+        LongPressGesture(minimumDuration: 0.5)
+            .sequenced(before: DragGesture(minimumDistance: 3, coordinateSpace: .named("tagNavReorder")))
+            .onChanged { value in
+                guard canReorderTag(tagName) else { return }
+                switch value {
+                case .first(true):
+                    beginTagNavReorder(tagName)
+                case .second(true, let drag?):
+                    if tagNavDragItem == nil {
+                        beginTagNavReorder(tagName)
+                    }
+                    reorderTagNavItem(at: drag.location)
+                default:
+                    break
+                }
+            }
+            .onEnded { value in
+                guard canReorderTag(tagName) else { return }
+                if case .second(true, let drag?) = value {
+                    reorderTagNavItem(at: drag.location)
+                }
+                endTagNavReorder()
+            }
+    }
+
+    private func beginTagNavReorder(_ tagName: String) {
+        guard canReorderTag(tagName) else { return }
+        if tagNavDragItem == nil {
+            tagNavDragItem = tagName
+        }
+        tagNavDragModeActive = true
+    }
+
+    private func endTagNavReorder() {
+        if tagNavDragModeActive {
+            TagEditor.reorderTags(draggedTagNames)
+        }
+        tagNavDragModeActive = false
+        tagNavDragItem = nil
+    }
+
+    private func reorderTagNavItem(at location: CGPoint) {
+        guard let fromName = tagNavDragItem,
+              let targetName = tagNavReorderFrames.first(where: { $0.value.contains(location) })?.key,
+              fromName != targetName,
+              let fromIndex = draggedTagNames.firstIndex(of: fromName),
+              let toIndex = draggedTagNames.firstIndex(of: targetName)
+        else { return }
+
+        withAnimation(.spring(response: 0.22, dampingFraction: 0.82)) {
+            let destination = toIndex > fromIndex ? toIndex + 1 : toIndex
+            draggedTagNames.move(fromOffsets: IndexSet(integer: fromIndex), toOffset: destination)
+        }
+        TagEditor.reorderTags(draggedTagNames)
+    }
+
+    private func handleAppDrop(_ providers: [NSItemProvider], targetTag: String) -> Bool {
+        guard let provider = providers.first(where: { $0.hasItemConformingToTypeIdentifier(UTType.plainText.identifier) }) else {
+            return false
+        }
+        provider.loadItem(forTypeIdentifier: UTType.plainText.identifier, options: nil) { item, _ in
+            let text: String?
+            if let data = item as? Data {
+                text = String(data: data, encoding: .utf8)
+            } else if let string = item as? String {
+                text = string
+            } else if let string = item as? NSString {
+                text = string as String
+            } else {
+                text = nil
+            }
+            guard let text else { return }
+            let parts = text.components(separatedBy: "\n")
+            guard let path = parts.first, !path.isEmpty else { return }
+            let source = parts.dropFirst().first ?? ""
+            let copy = NSEvent.modifierFlags.contains(.option)
+            DispatchQueue.main.async {
+                dropApp(path: path, sourceTag: source, targetTag: targetTag, copy: copy)
+            }
+        }
+        return true
+    }
+
+    private func dropApp(path: String, sourceTag: String, targetTag: String, copy: Bool) {
+        appDragModeActive = false
+        guard !isSystemDefaultDropTarget(targetTag) else {
+            showDropWarning()
+            return
+        }
+        guard tagColors[targetTag] != nil else { return }
+        guard sourceTag != targetTag || copy else { return }
+        TagEditor.moveApp(
+            path: path,
+            from: sourceTag,
+            to: targetTag,
+            color: tagColors[targetTag] ?? 0,
+            copy: copy
+        )
+        showDropRefresh()
+        refreshApps(forceLayoutRefresh: true)
+    }
+
+    private func isSystemDefaultDropTarget(_ targetTag: String) -> Bool {
+        let defaultNames = [
+            defaultGroupName,
+            tr("group.uncategorized"),
+            "Mac自带",
+            tr("group.appleBuiltIn")
+        ]
+        return defaultNames.contains(targetTag)
+    }
+
+    private func showDropWarning() {
+        withAnimation(.spring(response: 0.24, dampingFraction: 0.82)) {
+            dropWarningToast = tr("drop.systemDefaultWarning")
+        }
+        DispatchQueue.main.asyncAfter(deadline: .now() + 1.6) {
+            withAnimation(.easeOut(duration: 0.18)) {
+                dropWarningToast = nil
+            }
+        }
+    }
+
+    private func showDropRefresh() {
+        dropRefreshStartedAt = Date()
+        withAnimation(.spring(response: 0.22, dampingFraction: 0.82)) {
+            dropRefreshVisible = true
+        }
+    }
+
+    private func finishDropRefreshAfterMinimumDuration() {
+        let minimumDuration: TimeInterval = 0.85
+        let elapsed = dropRefreshStartedAt.map { Date().timeIntervalSince($0) } ?? minimumDuration
+        let delay = max(0, minimumDuration - elapsed)
+        DispatchQueue.main.asyncAfter(deadline: .now() + delay) {
+            withAnimation(.easeOut(duration: 0.18)) {
+                dropRefreshVisible = false
+            }
+            dropRefreshStartedAt = nil
+        }
+    }
+
+    private func setAppDragMode(_ active: Bool) {
+        appDragModeActive = active
+        if active {
+            DispatchQueue.main.asyncAfter(deadline: .now() + 8) {
+                if appDragModeActive {
+                    appDragModeActive = false
+                }
+            }
+        }
+    }
+
+    func refreshApps(forceLayoutRefresh: Bool = false) {
         DispatchQueue.global(qos: .userInitiated).async {
             var apps = AppIndexer.scan()
             let store = TagDatabase.load()
@@ -962,18 +1412,42 @@
                 allApps = apps
                 tagColors = colors
                 draggedTagNames = order
+                if forceLayoutRefresh {
+                    withAnimation(.spring(response: 0.28, dampingFraction: 0.86)) {
+                        layoutRefreshID = UUID()
+                    }
+                    finishDropRefreshAfterMinimumDuration()
+                }
             }
         }
     }
 
     func openApp(_ app: AppInfo) {
+        appDragModeActive = false
         hideOverlay()
-        NSWorkspace.shared.open(app.path)
+        let configuration = NSWorkspace.OpenConfiguration()
+        NSWorkspace.shared.openApplication(at: app.path, configuration: configuration)
     }
 }
 
 // MARK: - Tag Label
 
+private struct TagReorderFramePreferenceKey: PreferenceKey {
+    static var defaultValue: [String: CGRect] = [:]
+
+    static func reduce(value: inout [String: CGRect], nextValue: () -> [String: CGRect]) {
+        value.merge(nextValue(), uniquingKeysWith: { _, new in new })
+    }
+}
+
+private struct TagNavReorderFramePreferenceKey: PreferenceKey {
+    static var defaultValue: [String: CGRect] = [:]
+
+    static func reduce(value: inout [String: CGRect], nextValue: () -> [String: CGRect]) {
+        value.merge(nextValue(), uniquingKeysWith: { _, new in new })
+    }
+}
+
 private struct TagLabel: Identifiable {
     var id: String { name }
     let name: String

--
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